Check valve with double fireproof valves for smoke flue

A check valve, fire damper technology, applied in valve details, control valve, valve device and other directions, can solve the problems of fire prevention and smoke prevention, backflow, no smoke upward function, etc., to achieve the effect of expanding space

Inactive Publication Date: 2014-07-30
黄加丰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of valve has the function of fire prevention and smoke prevention, but when the dissolver cannot dissolve, it will not be able to play the role of fire prevention and smoke prevention, and it has no function of drawing smoke upwards, and even the largest flue pipe smoke will flow backward

Method used

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  • Check valve with double fireproof valves for smoke flue
  • Check valve with double fireproof valves for smoke flue
  • Check valve with double fireproof valves for smoke flue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] refer to Figure 1-Figure 6 , a double-valve check valve for flue fire prevention, including a main valve body 1 and an auxiliary valve body, the auxiliary valve body is placed in the main valve body 1 and matched with the main valve body 1 as a whole.

[0026] The main valve body 1 is a circular cavity with two small ends and a large middle. There is a square protrusion near the flue pipe outside the cavity. The smoke outlet of the cavity is set in an arch shape. The supporting plate 10 receiving the auxiliary valve body is provided with a manual valve opening rod 11 connected with the main valve body 1 on the right side of the front end of the main valve body 1 .

[0027] The auxiliary valve body is composed of a smoke inlet 3 that gradually changes from a circle to a square and an auxiliary valve body 2 connected to the smoke inlet 3. The auxiliary valve body 2 is composed of two right-angled surfaces holding the sealing valve 5 and holding the fire damper 8. The sq...

Embodiment 2

[0032] The smoke inlet at the rear end of the main valve body 1 and the exhaust pipe interface of the hood are arranged in a circular shape, and the remaining part is arranged in a square structure from the front end.

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PUM

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Abstract

The invention discloses a check valve with double fireproof valves for a smoke flue, which comprises a valve body, a sealing valve and a spring and is characterized in that the valve body is divided into a main valve body and an auxiliary valve body; and the auxiliary valve body is placed in the main valve body and is assembled with the main valve body in a matching manner. The check valve has the advantages that the fireproof valves of the check valve have the function of leading smoke upwards, no smoke backflow can be generated, and the smoke-blocking and fireproof effects are good; and moreover, the big flue is not required, so that the building weight can be reduced, the kitchen space is enlarged, and the construction cost is reduced.

Description

technical field [0001] The invention relates to smoke blocking and fire prevention in a flue, in particular to a flue fire prevention double-valve check valve for a public kitchen system. Background technique [0002] The flue check valve is a common tool for blocking smoke and fire in every household in the public flue system. With the improvement of people's living standards, the requirements for the flue check valve are getting higher and higher. The current flue check valve There are many types of return valves, generally composed of a valve body and a sealing valve, and the smoke is blocked through the sealing valve arranged in the front end of the valve body. This kind of valve has poor sealing performance, easy to leak smoke, and has no fire protection function. It also consists of a valve body, a spring and a dissolver. Finally, when the temperature reaches above 70°C, after the dissolver dissolves, the spring will press the sealing valve to achieve the effect of fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K27/02F16K15/03F16K15/18
Inventor 黄加丰
Owner 黄加丰
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